10210210121021 has 4 divisors (see below), whose sum is σ = 10219943401500. Its totient is φ = 10200476840544.

The previous prime is 10210210120987. The next prime is 10210210121047. The reversal of 10210210121021 is 12012101201201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9110050377796 + 1100159743225 = 3018286^2 + 1048885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10210210121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210210120987 and 10210210121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210219121021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4866638666 + ... + 4866640763.

It is an arithmetic number, because the mean of its divisors is an integer number (2554985850375).

Almost surely, 2^{10210210121021} is an apocalyptic number.

It is an amenable number.

10210210121021 is a deficient number, since it is larger than the sum of its proper divisors (9733280479).

10210210121021 is an equidigital number, since it uses as much as digits as its factorization.

10210210121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733280478.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10210210121021 its reverse (12012101201201), we get a palindrome (22222311322222).

The spelling of 10210210121021 in words is "ten trillion, two hundred ten billion, two hundred ten million, one hundred twenty-one thousand, twenty-one".